Metal encased basic refractories



FIG.

March 1960 G. P. REINTJES 2,927,454

METAL ENCASED BASIC REFRACTORIES Filed Dec. 50, 1957 n INVENTOR. /43} G E ORGE P. RE I NTJES ATTY.

This invention relates to a modification of the constructron shown in my copending application Serial No.

302,598, filed August 4, 1952, now abandoned, and its prime object is to provide a pintle or stud cantilever support for furnace walls and particularly those at door openings and the like, where pie or wedge-shaped tile must be used.

Another object of the invention is to produce a construction of this type in which the metal encased refractory is cantilevered by the metal encasement without tensile loading on the basic refractory material and is held in horizontal belts or courses at right-angles or perpendicular to the framework of the furnace and cannot oscillate or shift around the pintle.

With the general objects named in view and others as will hereinafter appear the invention consists in certain novel and useful features of construction and organization of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in which:

Figure 1 is a fragmental perspective view of a furnace wall as at a door opening or the like, embodying the basic refractory support of the invention.

Figure 2 is a fragmental perspective view showing a basic metal encased refractory in cantilevered relation to the hanger.

In the said drawing, where like reference character identify corresponding parts in all of the figures, 1 represents the skeleton uprights of the furnace, and secured thereto in any suitable manner in horizontal position are stringers or supports 2 having upstanding flanges 3 which form the furnace walls to which the refractory cantilever supports are detachably secured as will hereinafter appear.

When the stringers are used at door openings they may be bent to arcuate form as shown.

The cantilever refractory support comprises a hook 4 which engages over the two sides of the flange 3, the parts being so designed that the hook is free for longitudinal and vertical movements on the flange. The lower end of the hook constitutes an abutment portion which engages one side of the flange 3 and orients the hook in a plane at right angles or perpendicular to that of the sides of the flange. The upper part of the hook constitutes a flat shelf extending at right angles or normal to one side of the support flange, and projecting perpendicular to the shelf and parallel to the support flange is a mounting stud or pintle 5. The lower end of the hook is formed with 2,927,454 Patented Mar. 8, 1960 a projecting abument shoulder or foot which has an enlarged abutment surface 6 which parallels one side of the flange 3 and the vertical axis of the stud 5.

The basic metal refractories are encased in metal casing 8, the blocks and the encasement being so designed that the upper face of the metal casing projects beyond the refractory material as at 9, where it is formed with an opening 10 to be hooked on the pintle 5. When the block is hooked on the pintle, its lower corner or lower vertical face portion contacts the abutment surface 6 and it is held firm in cantilevered position, the abutment surface preventing oscillation around the pintle. This arrangement assures proper positioning of the refractory when a wall is being erected and also prevents growth or expansion and possible shifting of all refractory blocks in one direction due to such growth. Where the refractories are used to form door openings, they are preferably made of wedge-shape as illustrated in the drawing. I

From the above description it will be evident that I have produced a construction embodying all of the features of advantage set forth as desirable, and while I have described and illustrated the preferred construction, it is to be understood that I reserve the right to all changes within the spirit and scope of the appended claim.

I claim:

In a furnace wall including a vertically extending flat support flange having two sides, a cantilever refractory support comprising a hanger including a hook engageable over saicl'flange for free vertical upward and longitudinal movements relative to-said flange, said hook including a lower abutment portion engaging one side of said flange and orienting said hook in a plane at right angles to the sides of said flange, said hook including a flat shelf projecting normal to one side of said flange, a mounting stud extending normal to said flat shelf and parallel to one side of the flange, a lower abutment foot projecting laterally from said abutment portion of the hook and including an enlarged surface portion mutually parallel to said one side of the flange and the vertical axis of said stud, a metal encasement, and a refractory in said encasement, the encasement at one upper end projecting beyond the corresponding end of the refractory, said projecting end of the encasement resting on the flat shelf and having an opening disposed inwardly of said end and receiving said stud, the encased refractory including a lower vertical face portion at said end, said face portion contacting the enlarged surface portion of said foot, whereby the refractory is cantilevered by said casing from said stud and is held by said foot against horizontal oscillation. I

References Cited in the file of this patent UNITED STATES PATENTS 2,187,669 Stewart Jan. 16, 1940 2,725,833 Reintjes Dec. 6, 1955 2,781,006 Heuer Feb. 12, 1957 FOREIGN PATENTS 609,546 Germany Feb. 18, 1935 

